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    • 21. 发明公开
    • Control device for press machine
    • Steuerungfüreine Presse
    • EP1741498A1
    • 2007-01-10
    • EP06012865.9
    • 2006-06-22
    • FANUC LTD
    • Iwashita, YasusukeOkita, TadashiKawamura, HiroyukiIkai, Satoshi FANUC
    • B21D24/02B30B15/02B30B15/28
    • B21D24/02
    • A control device (10) for a press machine, by which one of the slide (4) and the die cushion (6) is suitably controlled, when a malfunction occurs in the other, such that the force between the slide (4) and the die cushion (6) does not excessively increase. The control device includes a slide control part (12) for controlling the motion of the slide (4) and a die cushion control part (14) for controlling the motion of the die cushion (6). A first transmitter (18) transmits an abnormal signal from the die cushion control part (14) to the slide control part (12) when a first detector (16) detects a malfunction of the die cushion (6). The slide control part (12) is configured to move the slide (4), when receiving the abnormal signal, such that the slide (4) is away from the position of the die cushion (6) at the time of receiving the abnormal signal by a certain distance and, to stop the slide (4).
    • 一种用于压力机的控制装置(10),当另一个故障发生时,滑块(4)和模座(6)中的一个被适当地控制,使得滑块(4)和 模具垫(6)不会过度增加。 控制装置包括用于控制滑动件(4)运动的滑动控制部件(12)和用于控制模具缓冲垫(6)运动的模具缓冲控制部件(14)。 当第一检测器(16)检测到模具垫(6)的故障时,第一发送器(18)将异常信号从模具缓冲控制部分(14)发送到滑动控制部分(12)。 滑动控制部(12)在接收到异常信号时使滑块(4)移动,使得滑块(4)在接收异常信号时远离模具座(6)的位置 一定距离,停止幻灯片(4)。
    • 23. 发明公开
    • Controller
    • 调节器
    • EP1662351A3
    • 2006-06-28
    • EP05257188.2
    • 2005-11-22
    • FANUC LTD
    • Iwashita, YasusukeOkita, TadashiKawamura, HiroyukiIkai, Satoshi, Fanuc
    • G05B19/4062
    • G05B19/4062
    • Disclosed is a controller for detecting need of maintenance, abnormal operation, etc. of a machine attributable to reduction of its strength caused by secular change. Acceleration detecting means are attached to driven elements that are driven by servomotors. Respective processors of axis control circuits for feedback-controlling the positions and velocities of the servomotors perform position and velocity feedback control processing for each position/velocity control period, thereby obtaining current commands, and output the commands to current loop processing. Detected acceleration values af are read from the acceleration detecting means. When the detected acceleration values a f are not smaller than a threshold value as, an abnormality signal is outputted, whereupon an alarm is displayed and the machine operation is stopped. Since the accelerations of the driven elements are detected directly by the acceleration detecting means, abnormality of the machine, such as frequent vibration attributable to aging of the machine, collision of the driven elements with other objects, or breakage of parts, can be detected securely.
    • 本发明公开了一种控制器,用于检测由于经年变化引起的强度降低而引起的机器的维护,异常操作等的需要。 加速度检测装置安装在由伺服电机驱动的驱动元件上。 用于反馈控制伺服电动机的位置和速度的轴控制电路的各个处理器对每个位置/速度控制周期执行位置和速度反馈控制处理,从而获得电流命令,并将命令输出到电流回路处理。 从加速度检测装置读取检测到的加速度值af。 当检测到的加速度值a f不小于阈值as时,输出异常信号,于是显示警报并停止机器操作。 由于通过加速度检测单元直接检测被驱动元件的加速度,因此能够可靠地检测机械的异常,例如由于电机的老化引起的频繁振动,从动元件与其他物体的碰撞或者部件的损坏等 。
    • 24. 发明公开
    • Controller
    • Steuervorrichtung mit Beschleunigungsmesser
    • EP1662352A2
    • 2006-05-31
    • EP05257190.8
    • 2005-11-22
    • FANUC LTD
    • Iwashita, YasusukeOkita, TadashiKawamura, HiroyukiIkai, Satoshi, c/o FANUC Dai3virakaramatsu
    • G05B19/416
    • G05B19/416G05B2219/37388G05B2219/43058Y10T483/1702Y10T483/1733
    • An acceleration detection unit for detecting acceleration is mounted on a driven body. When a previous block is a positioning command, the system waits till the detected value of acceleration detected by the acceleration detection unit becomes equal to or less than a set value αs after the distribution of the movement command of the positioning command is ended. If the detected value of acceleration becomes equal to or less than the set value αs, the distribution of the movement command of the next block is started. Because the cutting feed, etc., is started after the detected value of acceleration has become equal to or less than the set value αs and the vibrations stopped, machining can be conducted with high accuracy.
    • 用于检测加速度的加速度检测单元安装在从动体上。 当前一块是定位命令时,在定位指令的移动指令的分配结束之后,系统等待直到由加速度检测单元检测到的加速度检测值变为等于或小于设定值±s。 如果检测到的加速度值等于或小于设定值±s,则开始下一个程序段的移动指令的分配。 由于在加速度的检测值变得等于或小于设定值±s并且振动停止之后开始切削进给等,因此可以高精度地进行加工。
    • 27. 发明公开
    • Field oriented control for the drive of a pressing machine
    • Feldorientierte Regelungfürden Antrieb einer Presse
    • EP0929145A2
    • 1999-07-14
    • EP99300247.6
    • 1999-01-13
    • FANUC LTD
    • Iwashita, Yasusuke, 9-307, FANUC ManshonharimomiKawamura, Hiroyuki
    • H02P21/00
    • B30B15/148H02P21/22
    • Current control for an AC servomotor for driving moving elements of a pressing machine is carried out by utilizing d-q conversion. A phase correction value θm is added to a rotor phase θr to compensate for a torque reduction associated with magnetic saturation. D-q conversion is effected in accordance with a three-phase actual current of a servomotor 4 and a corrected rotor phase θ (= θr + θm), whereby a d-phase current Id in the direction of a magnetic flux formed by a magnetic field system and a q-phase current Iq perpendicular to the d-phase current Id are obtained. Current loop control is effected with a q-phase current command used as a torque command and with a d-phase current command adjusted to 0, whereupon command voltages Vd and Vq are obtained. Conversion into three-phase voltage commands Vu, Vv and Vw is effected by means of a two-phase-to-three-phase converter 2, and the servomotor 4 is driven by means of a power amplifier 3. With this arrangement, there is no current loop phase lag, reactive current can be reduced, and high torque can be generated. Thus, high-speed operation can be carried out with reduced heat release from a motor.
    • 通过利用d-q转换来执行用于驱动压制机的移动元件的交流伺服电动机的电流控制。 相位校正值&thetas; m被加到转子相位; r来补偿与磁饱和相关的转矩降低。 D-q转换根据伺服电动机4和校正转子相位的三相实际电流进行; (=Θ r +& t; m),由此获得由磁场系统形成的磁通方向的d相电流Id和与d相电流Id垂直的q相电流Iq。 利用用作转矩指令的q相电流指令,并将d相电流指令调整为0来实现电流环路控制,从而获得指令电压Vd和Vq。 转换为三相电压指令Vu,Vv,Vw是借助于二相到三相转换器2进行的,伺服电动机4由功率放大器3驱动。这样一来, 无电流回路相位滞后,无功电流可以降低,可产生高转矩。 因此,可以通过减少从电动机的放热而进行高速运转。
    • 30. 发明公开
    • Motor drive apparatus equipped with dynamic braking circuit fault detection capability
    • 米特动力学家Bremskreisfehlererkennungsfähigkeitausgestattete Motorantriebsvorrichtung
    • EP2079159A2
    • 2009-07-15
    • EP08020765.7
    • 2008-11-28
    • FANUC LTD
    • Iwashita, YasusukeOkita, TadashiKawamura, HiroyukiTakayama, Kenichi
    • H02P3/18
    • H02P3/18G01R31/024
    • A motor drive apparatus 1 having a dynamic braking circuit 5 for producing a deceleration torque utilizing a braking force caused by a synchronous motor 4 acting as a generator when the synchronous motor 4 is deenergized, is equipped with a dynamic braking circuit fault detection capability, and comprises: a DC power supply 2 which is obtained by rectifying input AC power; voltage application means 2, 3, 10, 11 for applying a voltage to the windings of the synchronous motor 4 and to the dynamic braking circuit 5 for a predetermined length of time by switching power transistors A to F connected to the DC power supply 2; current detection means 6 for detecting the value of a current flowing from the power transistors A to F; and fault checking means 11 for checking the dynamic braking circuit 5 for the presence or absence of a fault, based on the current value detected by the current detection means 6 and on a predefined threshold value. With this configuration, detection of faults in the dynamic braking circuit is accomplished without requiring the addition of a contact signal or a control circuit.
    • 具有动力制动电路5的电动机驱动装置1配备有动态制动电路故障检测能力,该动力制动电路5利用在同步电动机4断电时作为发电机的同步电动机4产生的制动力产生减速转矩, 包括:通过整流输入AC电力获得的直流电源2; 通过连接到直流电源2的功率晶体管A至F,施加电压给同步电动机4的绕组和动态制动电路5达预定时间长度的电压施加装置2,3,10,11; 用于检测从功率晶体管A至F的电流值的电流检测装置6; 以及用于基于由电流检测装置6检测到的电流值和预定义的阈值来检查动态制动电路5是否存在故障的故障检查装置11。 利用这种配置,可以在不需要添加接触信号或控制电路的情况下实现动态制动电路中的故障的检测。